667106577 has 16 divisors (see below), whose sum is σ = 1020188160. Its totient is φ = 430390800.

The previous prime is 667106551. The next prime is 667106581. The reversal of 667106577 is 775601766.

667106577 is a `hidden beast` number, since 6 + 6 + 71 + 0 + 6 + 577 = 666.

667106577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 667106577 - 2¹⁰ = 667105553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (667106597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397674 + ... + 399347.

It is an arithmetic number, because the mean of its divisors is an integer number (63761760).

Almost surely, 2^667106577 is an apocalyptic number.

It is an amenable number.

667106577 is a deficient number, since it is larger than the sum of its proper divisors (353081583).

667106577 is a wasteful number, since it uses less digits than its factorization.

667106577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797061 (or 797055 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The square root of 667106577 is about 25828.4063968337. The cubic root of 667106577 is about 873.7725710244.

The spelling of 667106577 in words is "six hundred sixty-seven million, one hundred six thousand, five hundred seventy-seven".